The Eos outer tank and the assembly stand arriving to Etcheverry hall, where they will be installed. The upper and lower PMT support structures also arrived on the same truck (9/13/2023). Underneath the top PMT support structure, holding the 12'' PMTs, as they are being populated (9/28/2023). Underneath the top PMT support structure, holding the 12'' PMTs, finalized (10/11/2023). The fully populated top array and associated support ring. Pictured are project scientists Leon Pickard (left) and Zara Bagdasarian (right) (10/12/2023). The fully populated top array, now attached to the lid of the outer vessel, being craned into position on the assembly stand (10/18/2023). The first peak at the acrylic vessel, looking at a bottom leg (10/20/2023). The unwrapped top of the acrylic vessel, attached to the top array of PMTs, seen above. Engineer Joe Saba (left) is looking down toward the bottom of the vessel. The central neck and bellows are being positioned at the center of the vessel (10/25/2023). The acrylic vessel being craned into position on the assembly stand. (10/25/2023). The view from the side of the acrylic vessel of the upper PMTs and the neck of the vessel (11/6/2023). The first three dichroicons installed on the 8-inch PMTs in the bottom array. There are also an additional three 8-inch PMTs installed (11/13/2023). View of the barrel PMTs from the top of the AV with two-thirds of them installed (11/16/2023). The top of the lower array, with nine dichroicons installed (11/16/2023). Project scientists Zara Bagdasarian and Leon Pickard installing a PMT and dichroicon in the lower array (11/16/2023). The top of the lower array, with all twelve dichroicons installed (11/17/2023). The completed lower array with the dichroicons (11/22/2023). View from the bottom of the detector, directly before the lower PMT was attached (11/21/2023). Looking down at the bottom array through the acrylic vessel (11/22/2023). Another image looking through the acrylic vessel at the PMTs and dichroicons (11/23/2023). Postdoc Tanner Kaptanoglu cleaning of the bottom of the outer vessel directly before inserting the inner vessel. (1/26/2024). The fully constructed Eos detector is lowered into the outer vessel! Engineer Joe Saba oversees the lift. (1/26/2024). The custom electronics boards built at the University of Pennsylvania, called the high voltage splitter and summer (HVSS), installed in the electronics rack. In this picture 96 PMTs are plugged in and power through the HVSS. (2/23/2024). The electronics rack that holds the boards and equipment that provides the power, triggering, and data aquisition capabilities. (3/1/2024).
The Eos outer tank as it is transported through the narrowest point in Etcheverry hall (9/13/2023). View of the assembly stand, the outer tank, and the partially populated top PMT array (9/28/2023). The plastic-wrapped acrylic vessel, being prepared for connection to the upper array (10/20/2023). Gabriel Oren Gann (left) with (left to right) project scientists Zara Bagdasarian and Leon Pickard, undergraduate student Joseph Koplowitz and postdoctoral fellow Tanner Kaptanoglu. They are standing beneath the lid of the detector's steel outer vessel. (10/22/2023). The plastic-wrapped acrylic vessel, attached to the upper array and the lid of the outer vessel, being craned into position on the assembly stand (10/25/2023). Installation of the first six fiber heads along the unistrut. Also pictured is the plastic tubing coming from the neck of the acrylic vessel, for eventual fluid deployment (11/1/2023). The first one and a half columns of PMTs installed around the sides of the acrylic vessel, with the plastic around the vessel removed (11/6/2023). The bottom array being position for the deployment of the bottom 8- and 10-inch PMTs and the dichroicons (11/6/2023). The first nine columns of PMTs installed around the sides of the acrylic vessel (11/9/2023). An above view of the first dichroicon to be installed in Eos (11/13/2023). Above view of the finalized lower array, with twelve dichroicons (11/20/2023). The lower array of PMTs and dichroicons connected to the rest of the detector and installed in the assembly stand (11/22/2023). Looking down at the bottom array through the acrylic vessel (11/22/2023). The detector being lowered into the assembly stand after the connection to the lower PMT array. Professor Gabriel Orebi Gann (left) oversees the operation (11/22/2023). The fully constructed Eos detector is lowered into the outer vessel! (1/26/2024). The start of the PMT cabling, bringing the cables down from the detector lid to the electronics rack, where they are read out. Students Ashley Rincon, Sawyer Kaplan, and Hong Joo Ryoo (left to right) are pictures. (2/12/2024). The lid of the detector after about half of the PMT cables have been routed down to the electronics rack. (2/20/2024). Graduate student Max Smiley on the lid of the detector, after the PMT, fiber, and slow control cables have been routed down to the electronics rack. The flanges are covered in black bags to reduce light leaks (3/15/2024). The detector fully insulated and wrapped in Finemet magnetic shielding. (3/20/2024).
